... Consider the braid group $B_3= $ and the nearest neighbor random walk defined by a probability $\nu$ on $\{a,a^{-1},b,b^{-1}\}$ that generates the whole group. ... The techniques developped to solve this problem apply, mutatis mutandis, to nearest neighbor random walks on other groups: (i) Artin groups of dihedral type; (ii) free products with amalgamation in which the factor groups are plain groups and the amalgamated subgroup is finite; (iii) HNN extensions in which the base group is finite. ...

Еще в разделе: (Показать все результаты (>502) - www.mccme.ru/ )

• Laminations and group actions in€аdynamics

... Our Galaxy . ... Stars . ... Image credit: ESO, Acknowledgement: VST/Omegacam Local Group Survey) . First observed in 1909, the WLM galaxy is part of the Local Group, about 10 million light years (3.1 Mpc) across, this is the set of more than 35 galaxies which includes our own Milky Way. ... I compared this little galaxy to a living fossil because looking at it gives us an insight into a past era in the UniverseтАЩs history. ... Distances and metallicities for 17 Local Group galaxies? . ...

Еще в разделе: (Показать все результаты (>2816) - www.armaghplanet.com/ )

• Astronotes | Armagh Planetarium's astronomy news from across the Universe
• Armagh Planetarium's Stellar Blog!
• February | Astronotes

... Right now, the world needs 10,000 additional radiotherapy machines to meet demand. ... The imaging and tracking (source finding) techniques being pioneered for Nano-X form part of an inter-disciplinary research program being developed through a CAASTRO collaboration currently involving Medical Physics and Astrophysics at Sydney and Curtin Universities, together with the Nelune Comprehensive Cancer Centre at Prince of Wales Hospital. ...

Еще в разделе: (Показать все результаты (>283) - www.mso.anu.edu.au/ )

• Software Maintenance Manual

... You are here: start €Ё lbaops €Ё lba-opssydney21-22feb12 . Trace: тАв lba-opssydney21-22feb12 . VLBI Schedule . LBA Home Page . ... LBA Correlation . ... Observer's Wiki . ... lbaops:lba-opssydney21-22feb12 . Annual LBA Operations, eVLBI and Networking Meeting . Sydney, 21-22 February 2012 . Block Agenda. ... Please review the Action items from the 2011 LBA ops meeting . ... Block Agenda for 2012 Ops/technical meeting . Detailed Agenda for 2012 Ops/technical meeting . ...

Еще в разделе: (Показать все результаты (>10110) - www.atnf.csiro.au/ )

• lbaops:lba-opshobart12-13feb13 [ATNF VLBI Wiki]
• lbaops:lba-opsperth11-12feb14 [ATNF VLBI Wiki]
• VLBI Wiki | Main / LBA-OpsHobart12-13Feb13

. Previous . 1 . 2 . 3 . 4 . б© Miruna Popescu

Еще в разделе: (Показать все результаты (>2060) - star.arm.ac.uk/ )

• Untitled Web Gallery - Page 1
• Untitled Web Gallery - Page 3
• Untitled Web Gallery - Page 2

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 06 - 12.02.2012, Forecast on 13 - 20.02.2012, Carrington Rotations 2120 (06,28.02.2012) SOLAR SUNSPOT ACTIVITY OF THE LAST PERIOD WAS ON AVERAGE AND LOW LEVELS. ... ON THE VISIBLE SOLAR DISK DURING THE LAST WEEK THE FOLLOWING CORONAL HOLES WERE OBSERVED: --------------------------------------------------------------------- sign N end Х end S end W end EE R Observatories CH + N20L327 N10L325 N00L332 N20L330 11.02 1 KP, SDO, SOHO.. ...

Еще в разделе: (Показать все результаты (>643) - www.izmiran.rssi.ru/ )

Astronomy Picture of the Day . Comet Hale-Bopp Develops a Tail . ... 12.02.1997 . ... February 1997 . ... 1997 1998 . ... NASA Web Site Statements, Warnings, and Disclaimers . ... U. Based on Astronomy Picture Of the Day . Publications with keywords: tail - Comet Hale-Bopp . Publications with words: tail - Comet Hale-Bopp . ... Comet Hale Bopp Over Val Parola Pass . ... Comet Holmes Grows a Tail . ... Comet Hale Bopp Over the Superstition Mountains . Exploring Comet Tails . ...

Еще в разделе: (Показать все результаты (>121155) - www.astronet.ru/ )

• Jupiter and the Red Spots
• XWare > APOD
• Journal "Peremennye Zvezdy"

... Home Education Classes AAA Spring Astronomy Class: The Physics of Astronomy тАУ February ? March 2016 . ... Classes . ... AAA Spring Astronomy Class: The Physics of Astronomy тАУ February - March 2016 . ... This MonthтАЩs Sky тАУ March 2016 . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

Еще в разделе: (Показать все результаты (>617) - www.aaa.org/ )

• Astronomy Workshop: Observing Variable Stars from the City ? February 15, 2015
• Other-Events ? Page 4 ? Amateur Astronomers Association of New York
• Logos ? Amateur Astronomers Association of New York

The group that operates in Firenze and Urbino has developed a number of inertial sensor of displacement (accelerometers), that are needed in the control loop of the superattenuators, and is also concerned in the measurement of the seismic noise in the area of the interferometer. ... 39-0552307-696 . ... 39-050911255 . ... 39-07224892 . ... 39-0552752-218 . ... Arcetri Home Page . Virgo Group Page . ...

Еще в разделе: (Показать все результаты (>6401) - www.arcetri.astro.it/ )

• Virgo Group - Gravitational Wave basics
• What's New
• FEBRUARY 26th 1998 SOLAR ECLIPSE FROM VENEZUELA

LAUNCHING . Rocket-Space Complex N1-L3 being . ... As a result of high-frequency vibrations in the engine №2 gas generator, a pressure reducing connector behind a turbine broke off and leakage of components occurred that caused a fire in the aft compartment and violated the engine control system operation that commanded to shut down engines at 68.7s. Despite the accident, this launch has proved the validity of the dynamic profile, launch dynamics, LV control processes using the ...

Еще в разделе: (Показать все результаты (>1185) - www.energia.ru/ )

• OFFICIAL PRESS RELEASE - S.P. KOROLEV ROCKET & SPACE CORPORATION ENERGIA
• S.P.Korolev RSC Energia - News
• S.P. Korolev RSC Energia - News

ALMA | ... Phase Correction Algorithms | ... On this page, we describe what the phase correction algorithms set out to do and the framework we have developed to optimally use all of the available information. ... We are developing a Bayesian framework to combine all the information we have about the current and future meterological conditions (which are naturally accommodated as priors in a Bayesian scheme) with detailed physical models of the atmosphere. ...

Еще в разделе: (Показать все результаты (>1571) - www.mrao.cam.ac.uk/ )

• Non-Gaussian Simulations

... ESO for the Public > Doing Business with ESO > Technology Transfer > Developments at ESO . ... About ESO . ... Survey Telescopes . ... The survey has been carried out at ESO in late 2004 to document both the technologies developed by, or for, ESO as well as examples of Technology Transfer that have taken place. ... Technologies that have been developed or extended in collaboration with industry through an ESO development contract or collaboration agreement, etc. ... Historic Developed Technologies ....